The Pieces-Jointed PSTM Processing of Liaohe Peripheral Basins in Zhangqiang Area
详细信息
- 责任者：Zhang Wei (Department of Liaohe Geophysical Survey ; BGP Inc. ; CNPC ; Panjin 124010 ; China) ; He Liegang
- 刊名：Geophysical and Geochemical Exploration
- 出版年：2013
- 卷期：37(2)
- 关键词：叠前时间偏移 ; prestack time migration ; 辽河平原 ; Liaohe Plain
- 页码：p.338-343
- 图表：illus., 5 refs.
- 分类号：1600
- issnNo：ISSN1000-8918
- isbnNo：CN11-1906/P
摘要
Zhangqiang area,which belongs to Liaohe peripheral basins,is restricted by the influence of the surface conditions and underground geological structure,and hence data-processing has met with great difficulties.Lots of targeted measures have been taken in field acquisition,but part of the original data signal-to-noise ratio remains low,causing a certain impact on data processing.According to the characteristics of the original data for PSTM,the prestack data purification was conducted,and the accurate three-dimensional velocity field and the appropriate parameters were established to obtain a reasonable process flow.PSTM results show that the profile’s breakpoint and fault are clear,and the homing of the diffracted wave was accurate.A comparison with the old data shows that the signal-to-noise ratio,resolution and deep imaging are improved significantly and can better reflect the structural form and stratigraphic architecture and meet the demand of the subsequent interpretation and inversion.
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